From c31d0d112f1e33fec3da0851aafffcfa477fb3bb Mon Sep 17 00:00:00 2001
From: Felipe Pena <felipe@php.net>
Date: Wed, 30 Jan 2008 10:54:41 +0000
Subject: [PATCH] Fixed Bug #43926 (isInstance() isn't equivalent to instanceof
 operator)

---
 ext/reflection/php_reflection.c    |  2 +-
 ext/reflection/tests/bug43926.phpt | 37 ++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 ext/reflection/tests/bug43926.phpt

diff --git a/ext/reflection/php_reflection.c b/ext/reflection/php_reflection.c
index eb3dc48310..82b2f3eda4 100644
--- a/ext/reflection/php_reflection.c
+++ b/ext/reflection/php_reflection.c
@@ -3481,7 +3481,7 @@ ZEND_METHOD(reflection_class, isInstance)
 		return;
 	}
 	GET_REFLECTION_OBJECT_PTR(ce);	
-	RETURN_BOOL(ce == Z_OBJCE_P(object));
+	RETURN_BOOL(HAS_CLASS_ENTRY(*object) && instanceof_function(Z_OBJCE_P(object), ce));
 }
 /* }}} */
 
diff --git a/ext/reflection/tests/bug43926.phpt b/ext/reflection/tests/bug43926.phpt
new file mode 100644
index 0000000000..373f9f1ba3
--- /dev/null
+++ b/ext/reflection/tests/bug43926.phpt
@@ -0,0 +1,37 @@
+--TEST--
+Bug#43926 - isInstance() isn't equivalent to instanceof operator
+--FILE--
+<?php
+
+class E {
+}
+class D extends E {
+}
+
+class A extends D {
+}
+
+class C extends A {
+}
+
+$ra = new ReflectionClass('A');
+$rc = new ReflectionClass('C');
+$rd = new ReflectionClass('D');
+$re = new ReflectionClass('E');
+
+$ca = $ra->newInstance();
+$cc = $rc->newInstance();
+$cd = $rd->newInstance();
+$ce = $re->newInstance();
+
+print("Is? A ". ($ra->isInstance($ca) ? 'true' : 'false') .", instanceof: ". (($ca instanceof A) ? 'true' : 'false') ."\n");
+print("Is? C ". ($ra->isInstance($cc) ? 'true' : 'false') .", instanceof: ". (($ca instanceof C) ? 'true' : 'false') ."\n");
+print("Is? D ". ($ra->isInstance($cd) ? 'true' : 'false') .", instanceof: ". (($ca instanceof D) ? 'true' : 'false') ."\n");
+print("Is? E ". ($ra->isInstance($ce) ? 'true' : 'false') .", instanceof: ". (($ca instanceof E) ? 'true' : 'false') ."\n");
+
+?>
+--EXPECT--
+Is? A true, instanceof: true
+Is? C false, instanceof: false
+Is? D true, instanceof: true
+Is? E true, instanceof: true
\ No newline at end of file
-- 
2.40.0